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31. 发明授权

US06580464B1 Color difference signal correction apparatus 有权
标题翻译：色差信号校正装置
公开(公告)号：US06580464B1
公开(公告)日：2003-06-17
申请号：US09721873
申请日：2000-11-27
申请人： Hisao Kunitani , Atsuhisa Kageyama , Katsuya Ishikawa
发明人： Hisao Kunitani , Atsuhisa Kageyama , Katsuya Ishikawa
IPC分类号： H04N973
CPC分类号： H04N9/73
摘要： The present invention provides a color difference signal correction apparatus for correcting color difference of parts having no color, particularly white characters, which can make the correction with high accuracy also for images including lightly colored parts. The color difference signal correction apparatus of the present invention comprises a full-wave rectification circuit 12 for full-wave rectifying an input color difference signal (R−Y)a, a full-wave rectification circuit 13 for full-wave rectifying an input color difference signal (B−Y)b, an addition circuit 14 for adding the outputs of the full-wave rectification circuit 12 and the full-wave rectification circuit 13, an addition circuit 4 for adding a white character slice level signal e and the output of the addition circuit 14, a luminance signal slice circuit 5 for slicing a luminance signal g with the output of the addition circuit 4, and an addition circuit 6 for adding the output of the luminance signal slice circuit 5 and the input color difference signal (B−Y)b and outputting the addition result.
摘要翻译：本发明提供了一种色差信号校正装置，用于校正没有颜色，特别是白色字符的部分的色差，其可以对包括浅色部分的图像进行高精度的校正。本发明的色差信号校正装置包括用于全波整流输入色差信号（RY）a的全波整流电路12，全波整流电路13，用于全波整流输入色差信号（BY）b，用于将全波整流电路12和全波整流电路13的输出相加的加法电路14，用于将白字符限幅电平信号e和加法电路的输出相加的加法电路4 14是用于对加法电路4的输出对亮度信号g进行分片的亮度信号限制电路5，以及用于将亮度信号限幅电路5的输出和输入色差信号（BY）b相加的加法电路6和输出加法结果。

32. 发明授权

US06373533B1 Image quality correction circuit for video signals 失效
标题翻译：视频信号图像质量校正电路
公开(公告)号：US06373533B1
公开(公告)日：2002-04-16
申请号：US09034851
申请日：1998-03-04
申请人： Minoru Kawabata , Masahiro Takeshima , Atsuhisa Kageyama , Hiroko Sugimoto
发明人： Minoru Kawabata , Masahiro Takeshima , Atsuhisa Kageyama , Hiroko Sugimoto
IPC分类号： H04N514
CPC分类号： G06T5/009 , G06T5/40 , G06T2207/10016 , G06T2207/20012 , G06T2207/30201 , H04N5/20
摘要： The tone of video signals is corrected without degrading the tone of certain image features, such as a human face. A gain controller operates and outputs an adjustment value using a histogram output produced by a histogram generator. An average value of picture levels on a screen is detected by an average picture level detector. A histogram correction circuit calculates a look-up table, and a video signal correction circuit corrects the tone of the video signals using the look-up table.
摘要翻译：纠正视频信号的音调，而不会降低某些图像特征（例如人脸）的色调。增益控制器使用由直方图发生器产生的直方图输出来操作并输出调整值。屏幕上的图像电平的平均值由平均图像电平检测器检测。直方图校正电路计算查找表，并且视频信号校正电路使用查找表校正视频信号的音调。

33. 发明授权

US5959695A 2-line YC separation device 失效
标题翻译： 2线YC分离装置
公开(公告)号：US5959695A
公开(公告)日：1999-09-28
申请号：US844500
申请日：1997-04-18
申请人： Hiroko Sugimoto , Atsuhisa Kageyama , Nobuo Taketani
发明人： Hiroko Sugimoto , Atsuhisa Kageyama , Nobuo Taketani
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A 2-line YC separation device reduces the number of delay circuits used for horizontal scanning time delay and minimizing arithmetic operation errors of comb-line filters. The device comprises a first delay circuit for delaying an input video signal for a horizontal scanning period; a first band-pass filter circuit whose input is the input video signal, a second band-pass filter circuit whose input is the output signal of the first delay circuit, a Y-correlation detector whose input is the output signals of the first and second band-pass filter circuits, a C-correlation detector whose input is the output signals of the first and second band-pass filter circuits, a second delay circuit for delaying the output signal of the Y-correlation detector for a horizontal scanning period, a third delay circuit for delaying the output signal of the C-correlation detector for a horizontal scanning period; and an operational circuit whose input is the output signals of the Y-correlation detector and C-correlation detector and the output signals of the second and third delay circuits.
摘要翻译： 2线YC分离装置减少了用于水平扫描时间延迟的延迟电路的数量，并减少了梳状滤波器的算术运算误差。该装置包括用于在水平扫描期间延迟输入视频信号的第一延迟电路; 第一带通滤波器电路，其输入是输入视频信号;第二带通滤波器电路，其输入是第一延迟电路的输出信号; Y相关检测器，其输入是第一和第二输出信号的输出信号带通滤波器电路，其输入是第一和第二带通滤波器电路的输出信号的C相关检测器，用于延迟Y相关检测器在水平扫描期间的输出信号的第二延迟电路，第三延迟电路，用于在水平扫描期间延迟C相关检测器的输出信号; 以及其输入是Y相关检测器和C相关检测器的输出信号和第二和第三延迟电路的输出信号的运算电路。

34. 发明授权

US5841486A Compensation voltage generating apparatus for multipicture display and video display including the same 失效
标题翻译：用于多画面显示和视频显示的补偿电压产生装置包括其
公开(公告)号：US5841486A
公开(公告)日：1998-11-24
申请号：US607385
申请日：1996-02-27
申请人： Hiroshi Ando , Atsuhisa Kageyama
发明人： Hiroshi Ando , Atsuhisa Kageyama
IPC分类号： H04N5/20 , H04N5/45 , H04N5/57
CPC分类号： H04N5/45 , H04N5/57 , H04N5/20
摘要： Average picture levels of a first video signal (for example, a parent picture signal) and a second video signal (for example, a child picture signal) are detected at first and second APL detection circuits, respectively. A compensation voltage sharing circuit inputs a compensation voltage, for example an ABL/ACL compensation voltage, and shares the compensation voltage according to a ratio of the APL values detected at the first and the second APL detection circuits. The shared compensation voltages are added to the first and the second video signals at the first and the second video processing circuits, respectively. The processed video signals are synthesized at a synthesizing circuit and the synthesized video signal is displayed on a screen of a display device as a multipicture, in which the first and the second pictures are independently and properly compensated by the ABL/ACL function. Thus, a good quality multipicture can be seen.
摘要翻译：分别在第一和第二APL检测电路处检测第一视频信号（例如父图像信号）和第二视频信号（例如，子图像信号）的平均图像电平。补偿电压共享电路输入补偿电压，例如ABL / ACL补偿电压，并且根据在第一和第二APL检测电路处检测到的APL值的比率共享补偿电压。分别在第一和第二视频处理电路上将共用补偿电压加到第一和第二视频信号上。处理的视频信号在合成电路处合成，并且合成的视频信号作为多画面显示在显示装置的屏幕上，其中第一和第二图像通过ABL / ACL功能独立且适当地补偿。因此，可以看到质量好的多画面。

35. 发明授权

US5748257A Picture information detecting apparatus for a video signal 失效
标题翻译：用于视频信号的图像信息检测装置
公开(公告)号：US5748257A
公开(公告)日：1998-05-05
申请号：US852670
申请日：1997-05-07
申请人： Minoru Kawabata , Atsuhisa Kageyama
发明人： Minoru Kawabata , Atsuhisa Kageyama
IPC分类号： H04N5/57 , H04N5/20 , H04N5/46
CPC分类号： H04N7/0122 , H04N5/20
摘要： A picture information detecting apparatus includes a picture area signal output circuit to detect a picture area excluding black band portions from the input video signal to produce a picture area signal to designate the picture area from which picture information is detected. Also included is a picture information detecting circuit for detecting picture information from the input video signal in the designated area. A picture quality compensating circuit is also provided for compensating the video input signal using the detected picture information to produce the gradation compensated video signal. An EDTV 2 discriminating circuit may also be included to determine if the video input signal is an EDTV 2 signal.
摘要翻译：图像信息检测装置包括图像区域信号输出电路，用于从输入视频信号中检测除黑带部分之外的图像区域，以产生图像区域信号，以指定检测图像信息的图像区域。还包括用于从指定区域中的输入视频信号中检测图像信息的图像信息检测电路。还提供了图像质量补偿电路，用于使用检测到的图像信息补偿视频输入信号，以产生灰度补偿视频信号。还可以包括EDTV 2识别电路以确定视频输入信号是否是EDTV 2信号。

36. 发明授权

US5502508A Gradation compensating apparatus for a video signal 失效
标题翻译：用于视频信号的渐变补偿装置
公开(公告)号：US5502508A
公开(公告)日：1996-03-26
申请号：US268302
申请日：1994-06-30
申请人： Minoru Kawabata , Atsuhisa Kageyama
发明人： Minoru Kawabata , Atsuhisa Kageyama
IPC分类号： H04N9/64 , H04N5/20 , H04N9/68
CPC分类号： H04N5/20 , H04N9/68
摘要： A gradation compensating apparatus comprises a skin color detecting circuit for detecting a skin color signal from an inputted color difference signal, a compensation amount controlling circuit for controlling the signal level by the skin color detecting signal as a compensating signal, an APL detecting circuit for detecting an APL level from an inputted luminance signal and for outputting the detected APL level as an APL voltage, an APL controlling circuit for controlling the compensating signal level by the APL voltage, an output circuit for outputting a compensating output voltage by controlling the compensating signal with an inputted dc voltage, and a CRT driving circuit for controlling the brightness of the picture by using the compensating output voltage as a cutoff reference voltage.
摘要翻译：灰度补偿装置包括：肤色检测电路，用于从输入的色差信号中检测皮肤颜色信号;补偿量控制电路，用于通过肤色检测信号作为补偿信号控制信号电平; APL检测电路，用于检测来自输入的亮度信号的APL电平和用于输出检测的APL电平作为APL电压; APL控制电路，用于通过APL电压来控制补偿信号电平;输出电路，用于通过控制补偿信号来输出补偿输出电压输入的直流电压和CRT驱动电路，用于通过使用补偿输出电压作为截止参考电压来控制图像的亮度。

37. 发明授权

US5241386A Video signal gradation corrector providing smooth correction while avoiding oscillation of a corrected output luminance signal due to noise and achieving fast response to sudden video scene changes 失效
标题翻译：视频信号调整校正器，在噪声纠正时，提供校正的输出发光信号的振荡，并对SUDDEN VIDEO SCENE CHANGES实现快速响应。
公开(公告)号：US5241386A
公开(公告)日：1993-08-31
申请号：US846143
申请日：1992-03-05
申请人： Toshiaki Tsuji , Atsuhisa Kageyama
发明人： Toshiaki Tsuji , Atsuhisa Kageyama
IPC分类号： H04N5/14 , H04N5/20 , H04N7/26
CPC分类号： H04N5/147 , H04N19/142 , H04N19/179 , H04N19/87 , H04N5/20
摘要： In a video signal gradation corrector used in a television receiver, an output of a look-up table memory is supplied to a constant-multiplication circuit, an output signal of the constant-multiplication circuit and an output signal of a look-up table operating circuit are added by an adder, and the result of addition is set into the look-up table memory. Further, a video scene change detecting circuit is provided between an output terminal of the look-up table operating circuit and a coefficient control terminal of the constant-multiplication circuit, and a coefficient of the constant-multiplication circuit is changed in accordance with a change in video scene. Thereby, a correction is made which is not affected by noises, is stable and smooth, and follows the change in video scene.

38. 发明授权

US07046298B2 Data signal extraction apparatus 有权
标题翻译：数据信号提取装置
公开(公告)号：US07046298B2
公开(公告)日：2006-05-16
申请号：US10400930
申请日：2003-03-28
申请人： Keiichi Kuzumoto , Toshihiro Matsumura , Akihiro Suzuki , Atsuhisa Kageyama
发明人： Keiichi Kuzumoto , Toshihiro Matsumura , Akihiro Suzuki , Atsuhisa Kageyama
IPC分类号： H04N7/08 , H04N7/87 , H04N11/00 , H04N7/00
CPC分类号： H04L7/0331 , H04L7/046 , H04N7/035 , H04N7/0352 , H04N7/0355 , H04N7/088
摘要： This invention provides a data signal extraction apparatus that accurately extracts data from a data signal that is serially transmitted even when phase shift or the like occurs. According to this apparatus, a phase shift amount calculation circuit 13 calculates a phase shift amount S13, then a correction amount calculation circuit 14 calculates a correction amount S14 on the basis of the phase shift amount S13, an extraction interval correction circuit 10 corrects an extraction interval value S9 on the basis of the correction amount, and an extraction pulse generation circuit 11 generates an extraction pulse S11 on the basis of a corrected extraction interval value S10, thereby extracting data from a binary signal S8 on the basis of the extraction pulse.
摘要翻译：本发明提供一种数据信号提取装置，即使发生相移等，也能够从串行发送的数据信号中精确地提取数据。根据该装置，相移量计算电路13计算相移量S13，然后校正量计算电路14基于相移量S13计算校正量S14，提取间隔校正电路10 基于校正量校正提取间隔值S 9，并且提取脉冲产生电路11基于校正的提取间隔值S10生成提取脉冲S 11，从而从二进制信号S 8中提取数据提取脉冲的基础。

39. 发明授权

US07034896B2 Gradation correction apparatus 失效
标题翻译：梯度校正装置
公开(公告)号：US07034896B2
公开(公告)日：2006-04-25
申请号：US10343512
申请日：2002-05-30
申请人： Keiichi Ito , Atsuhisa Kageyama
发明人： Keiichi Ito , Atsuhisa Kageyama
IPC分类号： H04N9/69
CPC分类号： H04N5/202 , G06T5/009 , G09G2320/0276 , H04N5/20
摘要： The present invention provides a gradation correction device which can perform gradation correction using digital feedback processing, and furthermore, can control the digital feedback processing with high accuracy. The gradation correction device is provided with a correction gain adjustable amount generation circuit (103) and a correction gain generation circuit (104), and the correction gain adjustable amount generation circuit (103) obtains a correction gain adjustable amount which is non-linear in relation to a difference S between a reference luminance level Yb1 and a maximum luminance level, and greater gamma correction is carried out as the value of the difference is larger.
摘要翻译：本发明提供了一种可以使用数字反馈处理执行灰度校正的灰度校正装置，并且可以高精度地控制数字反馈处理。灰度校正装置具有校正增益可调量生成电路（103）和校正增益生成电路（104），校正增益可调量生成电路（103）获得非线性的校正增益可调量与基准亮度电平Yb 1和最大亮度电平之间的差S的关系以及较大的伽马校正被执行，因为差值越大。

40. 发明授权

US06661469B1 False contour correcting apparatus and method 有权
标题翻译：假轮廓修正装置及方法
公开(公告)号：US06661469B1
公开(公告)日：2003-12-09
申请号：US09581644
申请日：2000-06-15
申请人： Minoru Kawabata , Atsuhisa Kageyama , Masahiro Takeshima
发明人： Minoru Kawabata , Atsuhisa Kageyama , Masahiro Takeshima
IPC分类号： H04N557
CPC分类号： H04N5/142 , H04N5/208 , H04N5/21 , H04N5/44 , H04N21/4318
摘要： A false contour correcting apparatus is capable of removing a false contour in an image based on a digital image signal while avoiding such a side effect caused by false contour correction where noises negatively effecting the display occur on a screen. Therefore, in the false contour correcting apparatus according, a double bit change detection circuit detects as a double bit change a signal value change which is twice a minimum quantization unit in a digital image signal, and outputs a double bit change detection signal representing the position of the double bit change. A signal correction circuit corrects the double bit change in the digital image signal into two one-bit changes on the basis of the double bit change detection signal. Consequently, a false contour corresponding to a portion where the double bit change exists is removed.
摘要翻译：假轮廓校正装置能够基于数字图像信号去除图像中的假轮廓，同时避免由于其中在屏幕上发生负面影响的噪声而导致的错误轮廓校正引起的这种副作用。因此，在根据双位变化检测电路的双位改变检测电路中，将数字图像信号中的最小量化单位的两倍的信号值变化检测为双位变化检测电路，并输出表示位置的双位变化检测信号的双位变化。信号校正电路基于双位变化检测信号将数字图像信号中的双位变化校正为两个1位变化。因此，与存在双位变化的部分对应的假轮廓被去除。

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